Argentina scored nine tries in a 62-3 rout of Spain in a Rugby World Cup warm-up on Saturday.
Full-back Juan Cruz Mallia, prop Joel Sclavi, winger Santiago Carreras and scrum-half Tomás Cubelli all scored first-half tries as the Pumas stretched to a 31-3 lead at the interval.
Flanker Marcos Kremer, centre Jerónimo De la Fuente and a double from number eight Facundo Isa completed the romp.
The victory will be a huge confidence-booster ahead of the Pumas' World Cup opener against struggling England in Marseille on September 9.
Earlier Saturday, England slumped to their first ever defeat to Fiji, losing 30-22 to the Pacific islanders at Twickenham.